%0 Journal Article %T Source Contamination in X-ray Studies of Star-forming Regions: Application to the Chandra Carina Complex Project %+ Institut d'Astrophysique de Paris (IAP) %A Getman, Konstantin V. %A Broos, Patrick S. %A Feigelson, Eric D. %A Townsley, Leisa K. %A Povich, Matthew S. %A Garmire, Gordon P. %A Montmerle, Thierry %A Yonekura, Yoshinori %A Fukui, Yasuo %< avec comité de lecture %J The Astrophysical Journal Supplement %V 194 %8 2011 %D 2011 %Z 1102.5122 %Z 2011ApJS..194....3G %R 10.1088/0067-0049/194/1/3 %K Galaxy: disk %K ISM: individual objects: Carina %K open clusters and associations: individual: Carina %K stars: formation %K stars: pre-main sequence %K X-rays: stars %K Astrophysics - Solar and Stellar Astrophysics %K Astrophysics - Astrophysics of Galaxies %K Astrophysics - High Energy Astrophysical Phenomena %Z Sciences of the Universe [physics]Journal articles %X We describe detailed simulations of X-ray-emitting populations to evaluate the levels of contamination by both Galactic and extragalactic X-ray sources unrelated to a star-forming region under study. For Galactic contaminations, we consider contribution from main-sequence stars and giants (not including cataclysmic variables and other classes of accretion-driven X-ray binary systems), as they make the dominant contribution at the position of the Carina Nebula. The simulations take into consideration a variety of technical factors involving a Galactic population synthesis model, stellar X-ray luminosity functions, Chandra telescope response, source detection methodology, and possible spatial variations in the X-ray background and absorption through molecular clouds. When applied to the 1.42 deg2 field of the Chandra Carina Complex Project (CCCP), the simulations predict ~5000 contaminating sources (1 source arcmin-2 of the survey), evenly distributed across the field. The results of the simulations are further employed in a companion CCCP study to assign membership probabilities to individual sources. %G English %L insu-03645991 %U https://insu.hal.science/insu-03645991 %~ INSU %~ CNRS %~ IAP %~ SORBONNE-UNIVERSITE %~ SU-INF-2018 %~ SU-SCIENCES %~ SU-TI %~ ALLIANCE-SU